31343540634 has 48 divisors (see below), whose sum is σ = 80288881920. Its totient is φ = 8646492960.

The previous prime is 31343540633. The next prime is 31343540647. The reversal of 31343540634 is 43604534313.

31343540634 is a `hidden beast` number, since 3 + 13 + 4 + 3 + 5 + 4 + 0 + 634 = 666.

It is not an unprimeable number, because it can be changed into a prime (31343540633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4285282 + ... + 4292589.

It is an arithmetic number, because the mean of its divisors is an integer number (1672685040).

Almost surely, 2^31343540634 is an apocalyptic number.

31343540634 is an abundant number, since it is smaller than the sum of its proper divisors (48945341286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31343540634 is a wasteful number, since it uses less digits than its factorization.

31343540634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8577915 (or 8577912 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

The spelling of 31343540634 in words is "thirty-one billion, three hundred forty-three million, five hundred forty thousand, six hundred thirty-four".